Do these work on metal boxes? ETA: I got what I thought was a good answer from "Kirk" in an answer to my question on Amazon. These work by digging into the plastic to keep the clip from pulling out. They would probably slip on a metal box. FWIW, most of the comments were positive on Amazon about it but they were based on using it on plastic boxes.
Glad I found these, I had a few boxes that were stripped put.
Do these work on metal boxes? ETA: I got what I thought was a good answer from "Kirk" in an answer to my question on Amazon. These work by digging into the plastic to keep the clip from pulling out. They would probably slip on a metal box. FWIW, most of the comments were positive on Amazon about it but they were based on using it on plastic boxes.
Do these work on round boxes?